Manufacture of rubber bands.



T. W. MILLER.

MANUFACTURE OF RUBBER BANDS.

APPLICATION FILED FEB. 28. 1914.

1,155,825. Patented Sept. 28, 1915.

8% 46 AQZ I as rubber tubing is lilzllillfziill lltil, slipping the same onm a iaamlm ving rubber bands have been en 1181, then placing in the bottom n'mli cavi stock of suitable siza than lacing Spech To all '11)]! (m2 it 122(1 mmmarn Bi; it known that l, T1102 citizen of the Uiiiired E t-iii Ashlanii, in the county 0i? i of Ohio, have invented cert ful Improvements in the liliana J Rubber Bands, of whiijah llll: i iii) specification.

My inx 'entian relates to the a; 01? elastic iaihherfkainfis, mil ject to piwividc an improved method of mal-zing the sa Heretofore two inuthaus of first of these iiaimsisls in p in mills in the'usaal maim an (J ii ing the stock to the required hiulailsss 1? cutting it to the required width, scainii'w and placing. it (an a mandrel to i'w usually in open steam. A. Fleithis Jill;

01 vulcanizing, thi tn laa a formal an: sllppel oil the mandrel and, cm; mi'a hands of the des red width by means of a Sill cutting machinei The other wetland. ii run the stock tin-(nigh a tiihmac ine, j i

Mi t

ing or 'vulcanizing it in any aiiitahi" r i .1 J L .7

11 31. I116 tubes so imam-n. in y man.

1I1i30 ham 3 of the ClQSU'QLl width My improved process was s in 'gneparmg the stool: in tha mill in the usual manof a suitable two-part mold a piece 0'? i a cora position in said mold, than placing a siinilai piece of the stock on the u pez' lacs; 01' i a core, then applying the upper pl; to m t mold containing; a suitable half caviiy. ihi placing the mold in a press and by using; a high pressure under heat flowing thi duh =1; together intc a seamless tube whivh alter the vulcanization 01 Wiring 1 camp cal while in the molil, may he i'ummitil th from and is ready to he cm; iniio hand-,5 hi the required width.

, To 11'101'0 clearly illustrate any im'pmvel method, reference is hail to the acwmpaay ing drawing, in which:

Figure 1 is a pui'spuvti\'v VliTW 0? mnlcl assenibleil with the shark i'hervin. .ligl'. 3 a tansvm'sc sectional \"lUW of a mnhl, the mold cavities aml the (an-vs lasing ni -a liiile different shape. is a view similar fa Fig. i) Fig. 2, showing still another shape Fig;

EHS' QYUCtlOH. ta Fig. l} of that the the cavities a: cams 3 then I bul'ipii 0f ruba' surface of i sec ziens 5 "alt being ho liig. 1, the ion into a a high p as- "ice vaicanizmg iaiaii between 4 lines of seen at (1e v whim mil, inta Nil)- may he i '1 mined mafi such thicken: hliQSE lines be pretimre may he a ho- 9 strips of ritihber inia as: 4 4a. in

mania an EUR :1 amiliiiarl 0011- same swing? emin outer may he aasurfaces 'of hinh will impala;

e rahmerit a Utiims, as WEll as i a Willi0 rubberband-widths.

5 bands, which consists in assembling the rubber in suitable form in a tube mold, simultaneously applying pressure" and heat to the mold to unite and vulcanize the rubber into a tube, and finally 2. The process of making elastic bands, which consists in assembling suitable pieces of rubber in a tube mold, applying pressure a ndheat to "the mold to unite the edges of I 1;; said pieces into a tube and to vulcanize the same; and finally cutting said tube into rubberband'widths.

bands, which consists-in assembling the rubcu tting said tube into recess bf making elastic rubber 7 heat to the mold to unite and vulcanize the rubber into a tube having a thickened portion along its united edge, and finally cutting said tube into rubber band Widths.

4. The process of making elastic rubber bands, which consists in assembling suitable pieces of rubber in a tube mold, applying pressure and heat to the mold to unite the edges of said pieces into a tube having said unlted edges thickened and to vulcanize the same, and finally cutting said tubeinto rubber band Widths.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

Witnesses:

PERCY B. HILLS, I. L. MILLER.

THOMAS W. MILLER. 

